Neb. Rev. Stat. § 77-1347

Upon approval of an application, the county assessor shall value the land as provided in section 77-1344 until the land becomes disqualified for such valuation by: (1) Written notification by the applicant or his or her successor in interest to the county assessor to remove such special valuation; (2) Inclusion of the land within the corporate boundaries of any sanitary and improvement district, city, or village, except that this subdivision shall not apply on or after January 1, 2023; (3) The land no longer qualifying as agricultural or horticultural land; or (4) For land that consists of less than five contiguous acres, the owner or lessee of the land not providing an Internal Revenue Service Schedule F or other suitable tax document reporting a profit or loss from farming for two out of the last three years.